Grandpa Fenn's Workshop
The Sound Maker
Something has been humming in the back of the workshop. Grandpa says it is a box with three strings. Poppy wants to know how a string makes a sound.
Grandpa Fenn's Workshop
Something has been humming in the back of the workshop. Grandpa says it is a box with three strings. Poppy wants to know how a string makes a sound.
Pick a string. Slide the bridge. Press pluck and listen.
Grandpa taps the box and smiles. Three strings, one wiggle, and a whole song waiting inside.
A sound is a wiggle. When a string is plucked it wiggles back and forth very fast. The wiggle pushes the air and the air carries it to your ear.
A short string wiggles fast. A fast wiggle makes a high sound. A long string wiggles slowly. A slow wiggle makes a low sound.
A thin string wiggles faster than a thick one. That is why the little strings on a guitar sing high and the big ones rumble low.
Poppy plucks a stringSound is a wiggle that travels through air.
Short string, high sound.
Thin string, high sound.
Big word for the day. Pitch. How high or low a sound is.
More machines are waiting on the bench.
Back to the Chain Reaction Bench